Bear Grylls Mens Walking Trousers Survivor Hiking New Version Take survival adventure trousers. Updated and upgraded with all the performance features you'd expect and agile enough to keep up when you're on the move. These trousers are constructed from tough, sun-protective supplex with stretch panels for an active fit. SolarDry Supplex with stretch panels for unrestricted movement 9 pocket construction 2 Drying loops Ankle reinforcement Protective boot tape Full protection SolarDry UPF40+